The Tallest Sand Dune in Europe is “The Great Dune of Pyla” which is in France, not far from Bordeaux. It is approx. 3km long, and around 500m wide, and approx. 100m to 117m (this changes year to year) above sea level. Apparently the Dune is spreading further into the forest every year, around 5 metres a year at present.
There are camp grounds at the base of the Dune, although the Dune is getting closer to the camp grounds every year, as well as houses that are situated near the Dune, a lot of people go paragliding on the Dune as well.
Dunes from where constructive waves encourage the accumulation of sand, and where prevailing onshore winds blow this sand inland. There needs to be obstacles e.g. vegetation, pebbles etc. to trap the moving sand grains. As the sand grains get trapped they start to accumulate, this is the start of dune formation. The wind then starts to affect the mound of sand by eroding sand particles from the windward side and depositing them on the leeward side. Gradually this action causes the dune to “migrate” inland, as it does so it accumulates more and more sand. Dunes provide privacy and shelter from the wind. Schools Wikipedia.
Little video of our 2010 trip to the Dune du Pyla in May. All shots filmed with a
GoPro Hero HD. By Johnny G.